Image 1 of 2: a flock of black-vented shearwaters sitting on the ocean surface in a "hot spot" start to panic and take flight as a feeding humpback whale rises to the surface upside down. The ventral groove blubber is seen just under the surface.

Image 1 of 2: a flock of black-vented shearwaters sitting on the ocean surface in a "hot spot" start to panic and take flight to clear out an area where a feeding humpack whale is just about ready to break the surface.